where \(H^{\mathrm {conf}}\)  contains the spin-independent linear confinement \(S(r)\)  and Coulomb-type interaction \(G(r)\) .
In the MGI model, the screen effect [1]} is introduced, where we should make a replacement in Eq. (REF ) as
\(br\rightarrow V^{\mathrm {scr}}(r)=\frac{b(1-e^{-\mu r})}{\mu }.\) 
